Distribution equilibrium in the extraction of uranyl chloride by tri-n-octylamine.
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概要
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Distribution of uranyl chloride between amine solution in benzene and aqueous solution of hydrochloric acid was clarified at 25°C over a wide range of U(VI)-loading to the amine. Distribution of uranyl chloride at several concentrations of the acid in aqueous phase was reduced to a single relation which was decided by the amine concentration in the organic phase. Employing this fact, the distribution equilibrium over a wide range of U(VI)-loading was obtained and the concentration of amine free from uranyl chloride was explicitly determined by use of the equilibrium without any assumptions for the associated form of uranyl-amine complexes. The extraction mechanism of uranyl chloride was found to be expressed as follows, by use of the above method: UO++2+2Cl-+4R3NHC1H2O→←(R3NHCl)4UO2Cl2H2O +3H2O UO++2+2Cl-+2R3NHCIH2O→←(R3NHCl)2UO2Cl2+2H2O
- 公益社団法人 化学工学会の論文
著者
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Harada Makoto
Institute Of Advanced Energy Kyoto University
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EGUCHI Wataru
Institute of Atomic Energy, Kyoto University
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BOKHARI AZHAR
Institute of Atomic Energy, Kyoto University
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ARAKI MIKIYOSHI
Institute of Atomic Energy, Kyoto University
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